Alessandra Ambrosio Williams-Sonoma Style

All this data was placed on a magnetic strip on the data card. It was encrypted so that no one could read the magnetic strip without the encryption codes. Aclient could withdraw a certain amount of money with each transaction and only so many times per day. Wetzel and his team had to build a module to be placed inside the machine that would rewrite the magnetic code each time the card was used. Then they had to design a module to produce the cards for the banks to replace lost cards. Designing the cash dispenser was a greater issue. The dispenser had to give out the right amount of money, so it had to dispense one bill at a time.